ExxonMobil has awarded EnerMech a contract to deliver a complete flowline decommissioning package for the Hoover Diana development in the Gulf of Mexico.
The scope includes decommissioning subsea flowlines, marking EnerMech’s first major decommissioning campaign in the region. An expert team integrating multiple service lines will be deployed from EnerMech’s Energy Solutions division to complete the full scope of work, including coiled tubing, pressure pumping, chemical services, filtration, separation and pipeline gauging.
In more detail, the scope includes flushing, pigging and filling subsea pipelines to safely remove hydrocarbons and prepare for decommissioning. This involves flushing the umbilical, pipeline flushing and seawater fill operations for the subsea flowline loop, as well as nitrogen flushing via subsea vessel, coiled tubing services and sweater filling for the Northern Diana flowline.
EnerMech CEO, Charles Davison Jr., said, “The Hoover-Diana project marks our first large-scale decommissioning engagement in the Gulf of Mexico, building on the strong relationship we’ve developed with ExxonMobil in Guyana since 2018.
“Securing this new contract following a competitive tender is a testament to our deep expertise, integrated capabilities, and the trust ExxonMobil continues to place in our team. Our early engagement has allowed us to develop a tailored methodology that maximizes efficiencies, minimizes risks, and ensures a safe, cost-effective execution.”
The Hoover and Diana fields have been a landmark offshore development for 25 years. This project will utilise the once pioneering floating production deep draft caisson vessel which gained prestige for being the deepest draft drilling and production system in the world.
